Multiple quantum phase transitions and superconductivity in Ce-based heavy fermions
| Autor: | Michael Smidman, Z. F. Weng, Xin Lu, Huiqiu Yuan, Lin Jiao |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Quantum phase transition
Physics Superconductivity Phase transition High-temperature superconductivity Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) Condensed Matter - Superconductivity General Physics and Astronomy FOS: Physical sciences Fermi surface 02 engineering and technology Fermion 021001 nanoscience & nanotechnology 01 natural sciences law.invention Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons law Quantum critical point Condensed Matter::Superconductivity 0103 physical sciences 010306 general physics 0210 nano-technology Quantum |
| Zdroj: | Reports on progress in physics. Physical Society (Great Britain). 79(9) |
| ISSN: | 1361-6633 |
| Popis: | Heavy fermions have served as prototype examples of strongly-correlated electron systems. The occurrence of unconventional superconductivity in close proximity to the electronic instabilities associated with various degrees of freedom points to an intricate relationship between superconductivity and other electronic states, which is unique but also shares some common features with high temperature superconductivity. The magnetic order in heavy fermion compounds can be continuously suppressed by tuning external parameters to a quantum critical point, and the role of quantum criticality in determining the properties of heavy fermion systems is an important unresolved issue. Here we review the recent progress of studies on Ce based heavy fermion superconductors, with an emphasis on the superconductivity emerging on the edge of magnetic and charge instabilities as well as the quantum phase transitions which occur by tuning different parameters, such as pressure, magnetic field and doping. We discuss systems where multiple quantum critical points occur and whether they can be classified in a unified manner, in particular in terms of the evolution of the Fermi surface topology. Comment: To appear in Reports on Progress in Physics: Special issue on strongly correlated electron systems, 24 pages, 22 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|